Manual

4. Use a worn out bore brush to clean the outside surface of the protruding gas tube (5)

(get the sides and bottom from the bottom of the upper receiver). This procedure

ruins the brush.

NOTE

Gas tubes will discolor from heat. Do not try to remove this discoloration.

Do not try to clean the inside of the gas tube. It is not needed with good quality

propellant, or effective with bad propellant.

Do not bend the gas tube; if the tube is bent it will slow or block forward movement of

the carrier group.

4. Take the bore brush off the rod (1) and install a swab holder and a swab. Apply

cleaning solvent to the swab, then run it through the chamber (2) and out the flash

suppressor (if applicable) (3). To remove carbon build up, let the solvent sit, then wipe

clean. A bore brush may be used with care to remove heavy carbon buildup. Wipe the

bore dry by running clean swabs all the way through from the chamber and out the

muzzle. REMEMBER, do not change directions in the bore.

6. Lightly lubricate the bore and chamber and the outer surfaces of the rifle.

7. Lubricate the bore with a lubricated swab, running the rod from the receiver to the

muzzle.

Inspect the barrel (1), gas tube (2), and hand guards for cracks, bends, or breaks. Be

sure the barrel has no obstructions.